Mold for drain-tiles



W. F. SLOAN. -MOLD FOR DRAIN TILES- APPLICATION FILED SEPT. 11, 1919.

1,336,867. I Patented Apr. 13, .1920.

WAYNE FRANKLIN SLOAN, OF POMEROY, OHIO.

MOLD FOR DRAIN-TILES.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application fi1ed September 11, 1919. Serial No. 323,090.

To all whom it may concern:

Be it known that I, WAYNE F. SLoAN, a citizen of the United States,residing at Pomeroy, in the county of Meigs and State of Ohio, haveinvented certain new and useful Improvements in Molds for Drain-Tiles,of which the following is a specification.

This invention relates to molds for making tubular tiles used fordrainage and for other purposes; and it consists in the novelconstruction and combination of the parts hereinafter fully describedand claimed.

In the drawings, Figure 1 is a plan view of a mold constructed accordingto this invention. Fig. 2 is a front view of the mold. Fig. 3 is avertical section through the mold, taken on the line 33 in Fig. 1.

The outer cylindrical outer wall 2 of the mold is formed of thin andresilient sheet metal, having side portions 3 and d which are slidableone over the other. A bar 5 is secured to the outer part 3, and asimilar bar 6 is secured to the inner part 4; but at a little distancefrom its edge which slides under the part 3. The bar 6 forms a stopwhich limits the size of the outer wall. A latch 7 is pivoted to the bar5, and engages with a pin or catch 8 on the bar 6, and holds the outerwall in its closed and contracted position.

The inner cylindrical core 12 of the mold is also formed of thinresilient sheet metal, and has side portions 13 and 141 which areslidable one over the other. A bar 15 is secured to the inner part 13,and a similar bar 16 is secured to the outer part ll but at a littledistance from its edge which is slidable over the part 13. When the twobars 15 and 16 meet they limit the contraction of the core.

Bell-crank levers 18 are pivoted to the bar 16 by pins 19, and 20 is ahandle bar pivoted by pins 21 to the similar arms of the two bell-cranklevers. The other arms of the bell-crank levers are pivoted to the bar15 by links 22 and pins 23. The handle bar projects from one end of thecore, and atfords a means for expanding and contractmg it, by turningthe bell-crank levers simultaneously on their pivots.

I'Vhen the parts are assembled as shown in Fig. 1, the plastic materialto form the tile is packed into the annular space 25 between the coreand the outer wall. The core is then contracted by moving the handle barendwise, to free it from the tile, and the outer wall is released fromthe tile by disengaging the latch, which permits the outer wall toexpand.

What I claim is:

1. In a mold, a cylindrical outer wall formed of resilient sheet metalhaving side portions which are slidable one over 'the other, straightbars secured to the said side portions and arranged parallel to eachother and limiting the contraction of the side wall, a pin projectingfrom one bar, and a fastening latch pivoted to the other bar andengaging with the said pin.

2. In a mold, a cylindrical core formed of sheet metal having sideportions which are slidable one over the other, bars secured to the saidside portions and limiting the contraction of the core, bell-cranklevers pivoted to one bar, links pivotally connecting the bell-cranklevers pivotally with the other bar, a handle bar pivoted to the saidbellcranlr levers and operating them simultaneously to expand andcontract the core, and a cylindrical outer wall arranged outside thesaid core.

In testimony whereof I have aifixed my signature.

WAYNE FRANKLIN SLOAN.

